Ice Rattled by Event

August 12, 2014 11:12 AM

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Icequakes can shake Antarctica, trembling across the frozen desert in the form of hundreds of micro-eqrthquakes an hour due to ice deformation. But in March 2010, Antarctica experienced more of an icequake than usual due to the Chilean earthquake. The kicker is that this earthquake occurred 3,000 miles away.

Yet what were the effects of the Chilean earthquake on Antarctica? That's exactly what scientists wanted to find out. They looked at seismic data from 42 stations in the six hours before and after the earthquake. They then removed longer-period signals as the seismic waves spread from the distant ep...